C#一般处理程序与json传递_c# 一般处理程序接收json-优快云博客

本文介绍了一个具体的前后端交互案例，前端使用jQuery的POST方法发送包含多个参数的请求，后端C#处理程序接收并响应JSON数据。展示了如何从前端发送JSON格式的数据到后端，并在后端处理后返回JSON格式的数据。

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前端页面

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <script src="../Scripts/jquery-1.10.2.min.js"></script>
    <title></title>
</head>
<body>
    <input type="button" id="btn4" value="post多个参数" />
</body>
</html>
<script>
 $("#btn4").click(function () {
//接交数据
$.post("Handler/HandlerLogin.ashx", { "StationID": "10001", "UserID": "101", "UserPwd": '12345' },	   
function (data, status) {//接收返回数据
	data = $.parseJSON(data);
	alert(data[0]["StationID"]);//取出json对象数组
    //alert(data.ID);//取出临时json对象
    //alert(data["ID"]);
});
</script>

后端处理程序,如下:

 public class HandlerLogin : IHttpHandler
 {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            //接收前端json数据
            string StationID = context.Request["StationID"];
            string UserID = context.Request["UserID"];
            string UserPwd = context.Request["UserPwd"];
            //返回json数据给前端
            List<loginInfo> lists = new List<loginInfo> {
               new loginInfo{ StationID ="10001", UserID ="101"},
               new loginInfo{ StationID ="10002", UserID="102"}
            };

            HttpContext.Current.Response.Write(JsonConvert.SerializeObject(lists));
            //HttpContext.Current.Response.Write(JsonConvert.SerializeObject(new { ID="1200" } ));//临时组合json

            //string strSql = $"select count(*) from LoginUser where (StationID='{info.StationID}'  and UserID ='{ info.UserID}' and UserPwd ='{ info.UserPwd}') or " +
            //$"(StationID = '{info.StationID}'  and UserName = '{ info.UserID}' and UserPwd = '{ info.UserPwd}')";
            //object obj = SQLHelper.GetSingleResult(strSql);
            //if (obj != null)
            //{
            //}
            //else
            //
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

后端为C#一般处理程序